1920 - 1925
Elsa (Società Anonima Elettromeccanica Lucini) was know for an attachable bicycle auxiliary engines designed in 1920 by Carlo Sorelli Brescian. They developed and manufactured a two-stroke air-cooled 75 cc which would be applied to the bicycle can could overcome climbs up to a 9% slope and a maximum speed of 40 km/h. The engine had a fixed speed reducer gear hardened connected to the rear wheel and driven by a short chain. It probably was only produced in 1920.
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